Covering for drawing-rolls for fibrous materials.



} UNITED STATES Patented June 7, 1904.

PATENT OFFICE.

CHARLES, SHIPP, OF LONDON, ENGLAND, ASSIGNOR TO BENJAMIN FRANKLIN NICHOLS, OF LONDON, ENGLAND.

COVERING FOR DRAWING-ROLLS FOR FIBROUS MATERIALS.

SPECIFICATION forming part of Letters Patent No. 761,854, dated June 7, 1904.

Application filed August 17,1903. Serial No. 169,819- (No specimens.)

To all ZUhOW" it may concern:

Be it known that I, CHARL'ns SHIPP, a subject of the King of England, residing at Islington, London, England, have invented certain new and useful Improvements in or Relating to Coverings for Drawing-Rolls for Fibrous Materials, of which the following is a specification.

This invention relates to the covering of drawing-rolls for drawing-heads for elongat ing, evening, and reducing slivers of fibrous material preparatory to spinning or twisting the same into yarns or threads, the object being to provide a roller which can be easily constructed with a cushion surface which will not be sticky or uneven or wear unequally. Hitherto the rollers 'consisted of metallic tubes surrounded by cloth padding for a cushion and covered with leather, the padding being cemented to the roll and a beveled lap made on the outside leather covering, which forms a tube drawn over the padding. It is found, however, that the surface of the leather is not level to begin with and soon gets Worn more unequal, While the cloth cushion-pad also becomes uneven, necessitating very heavy weights hanging on the rolls to draw the fibers.

According to the present invention the cloth pad and leather are dispensed with, and a single cover consisting of a wear-resisting cushion composition upon a suitable textile backing is cemented in one operation to the roller, making a perfectly level roll and all one size, which is impossible with leather and cloth padding. It is also found that the weights necessary with composition rollers are very slight in comparison with those requircd for leather rollers. In some instances less than half weight can be used, whereby a great saving of power is effected.

In making a composition suitable for the purpose according to this invention Chinese wood-oil, with the addition of a small proportion of resinous matter, is incorporated with ground cork, and the resulting material is a very elastic, resilient, and tough composition. In the composition the following ingredients may, for example, be employed: Chinese tion.

The ingredients used in the composition and their proportions may be varied without departing from the spirit of this invention.

It isfound that by the use of Chinese woodoil in combination with cork and resin the layer of composition adheres with greater tenacity to the textile backing than with other oils heretofore tried and is not peeled off or permanently marked by the fluted under rollers in conjunction with which the drawing: rolls are used, thus making it possible to get the required elasticity for drawing fibrous materials never before obtained with composition rolls.

The covering is cut into pieces of exactly the size required to surround the metal rollers, and in order to harden the composition it is dried at ahigh temperature either before or after application to the roller.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A composition of matter for use in covering drawing-rolls which consists of Chinese wood-oil boiled with resinous matter, ground up with cork and rolled onto a textile backing.

2. A composition of matter for use in covering drawing-rolls which consists of Chinese Wood-oil, boiled with resinous matter, ground up with cork and vegetable black and rolled onto a textile backing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES SHIPP. 

